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<title>Problem 1636. -- [Usaco2007 Jan]Balanced Lineup -- 衡阳八中OJ离线版-2012-02-29</title><center><h2>1636: [Usaco2007 Jan]Balanced Lineup</h2><span class=green>Time Limit: </span>5 Sec&nbsp;&nbsp;<span class=green>Memory Limit: </span>64 MB<br><span class=green>Submit: </span>160&nbsp;&nbsp;<span class=green>Solved: </span>137<br>[<a href='submitpage.php?id=1636'>Submit</a>][<a href='problemstatus.php?id=1636'>Status</a>][<a href='bbs.php?id=1636'>Discuss</a>]</center><h2>Description</h2><div class=content>
For the daily milking, Farmer John's N cows (1 <= N <= 50,000)
always line up in the same order. One day Farmer John decides to
organize a game of Ultimate Frisbee with some of the cows. To keep
things simple, he will take a contiguous range of cows from the
milking lineup to play the game. However, for all the cows to have
fun they should not differ too much in height.

Farmer John has made a list of Q (1 <= Q <= 200,000) potential
groups of cows and their heights (1 <= height <= 1,000,000). For
each group, he wants your help to determine the difference in height
between the shortest and the tallest cow in the group.

</div><h2>Input</h2><div class=content>* Line 1: Two space-separated integers, N and Q.

* Lines 2..N+1: Line i+1 contains a single integer that is the height
        of cow i

* Lines N+2..N+Q+1: Two integers A and B (1 <= A <= B <= N),
        representing the range of cows from A to B inclusive.

</div><h2>Output</h2><div class=content>6 3
1
7
3
4
2
5
1 5
4 6
2 2


</div><h2>Sample Input</h2>
			<div class=content><span class=sampledata>* Lines 1..Q: Each line contains a single integer that is a response<br />
        to a reply and indicates the difference in height between the<br />
        tallest and shortest cow in the range.<br />
</span></div><h2>Sample Output</h2>
			<div class=content><span class=sampledata><br />
6<br />
3<br />
0<br />
</span></div><h2>HINT</h2>
			<div class=content><p></p></div><h2>Source</h2>
			<div class=content><p><a href='problemset.html?search=Silver'>Silver</a></p></div><center>[<a href='submitpage.php?id=1636'>Submit</a>][<a href='problemstatus.php?id=1636'>Status</a>][<a href='bbs.php?id=1636'>Discuss</a>]</center>﻿<br>

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